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Maui Airlines de Havilland DHC-6-300 incident

11 Apr 1987 · AGANA, GU, United States

de Havilland DHC-6-300 · Incident en route

From Girona-Costa Brava Airport (GRO) to Antonio B. Won Pat International Airport (GUM)

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Event

NTSB case
LAX87IA176
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Incident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
0 · all aircraft and ground
Ground fatalities
0
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
Charter & commuter
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Visual Meteorological Cond

de Havilland DHC-6-300

Aircraft type
de Havilland DHC-6
Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N96RA
Onboard fatalities
Unknown
Route
From Girona-Costa Brava Airport (GRO), RotaTo Antonio B. Won Pat International Airport (GUM), Agana, GU
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 135: Air Taxi & Commuter
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
En route · descent
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Miscellaneous/other
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
None

Cause areas

  • Pilot in command › Incapacitation

Not plotted · Location withheld: coordinates are missing, conflicting, invalid, or have no accepted acquisition method. No substitute location has been invented.

NTSB narrative

AS THE AIRCRAFT APPROACHED ITS HOME AIRPORT AT AGANA, GUAM THE CAPTAIN PASSED OUT. THE FIRST OFFICER TOOK OVER THE CONTROLS AND LANDED THE ACFT WITHOUT FURTHER INCIDENT. THE CAUSE OF THE INCAPACITATION WAS NOT DETERMINED.

Verbatim NTSB analysis from the NTSB dataset

Sources

NTSB record LAX87IA176
Event ID
20001213X30708
Case number
LAX87IA176
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (5)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status, damage. Values present in the bulk record are kept.
  • The date is the UTC date the NTSB stores; the local time zone is not recorded, so the local date may differ by a day.
  • API snapshot SHA-256: e9ba7e55a6296e3e153b953f2ee47885a5f9fd785e2e6ba126837e5afcda1912; retrieved 2026-09-18T19:41:19.618Z.
  • Corrected after a review of the NTSB narrative, which states these values explicitly: destination. The narrative states the aircraft "APPROACHED ITS HOME AIRPORT AT AGANA, GUAM" and landed there; the destination was not recorded.